diff options
Diffstat (limited to 'stm/stmusb/usb_otg.c')
| -rw-r--r-- | stm/stmusb/usb_otg.c | 418 |
1 files changed, 418 insertions, 0 deletions
diff --git a/stm/stmusb/usb_otg.c b/stm/stmusb/usb_otg.c new file mode 100644 index 0000000000..bb421ae914 --- /dev/null +++ b/stm/stmusb/usb_otg.c @@ -0,0 +1,418 @@ +/**
+ ******************************************************************************
+ * @file usb_otg.c
+ * @author MCD Application Team
+ * @version V2.1.0
+ * @date 19-March-2012
+ * @brief OTG Core Layer
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usb_defines.h"
+#include "usb_regs.h"
+#include "usb_core.h"
+#include "usb_otg.h"
+
+/** @addtogroup USB_OTG_DRIVER
+ * @{
+ */
+
+/** @defgroup USB_OTG
+ * @brief This file is the interface between EFSL ans Host mass-storage class
+ * @{
+ */
+
+
+/** @defgroup USB_OTG_Private_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USB_OTG_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+
+/** @defgroup USB_OTG_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USB_OTG_Private_Variables
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USB_OTG_Private_FunctionPrototypes
+ * @{
+ */
+
+static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev);
+
+static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev);
+static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev);
+static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev);
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USB_OTG_Private_Functions
+ * @{
+ */
+
+
+/* OTG Interrupt Handler */
+
+
+/**
+ * @brief STM32_USBO_OTG_ISR_Handler
+ *
+ * @param None
+ * @retval : None
+ */
+uint32_t STM32_USBO_OTG_ISR_Handler(USB_OTG_CORE_HANDLE *pdev)
+{
+ uint32_t retval = 0;
+ USB_OTG_GINTSTS_TypeDef gintsts ;
+ gintsts.d32 = 0;
+
+ gintsts.d32 = USB_OTG_Read_itr(pdev);
+ if (gintsts.d32 == 0)
+ {
+ return 0;
+ }
+ if (gintsts.b.otgintr)
+ {
+ retval |= USB_OTG_HandleOTG_ISR(pdev);
+ }
+ if (gintsts.b.conidstschng)
+ {
+ retval |= USB_OTG_HandleConnectorIDStatusChange_ISR(pdev);
+ }
+ if (gintsts.b.sessreqintr)
+ {
+ retval |= USB_OTG_HandleSessionRequest_ISR(pdev);
+ }
+ return retval;
+}
+
+
+/**
+ * @brief USB_OTG_Read_itr
+ * returns the Core Interrupt register
+ * @param None
+ * @retval : status
+ */
+static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev)
+{
+ USB_OTG_GINTSTS_TypeDef gintsts;
+ USB_OTG_GINTMSK_TypeDef gintmsk;
+ USB_OTG_GINTMSK_TypeDef gintmsk_common;
+
+
+ gintsts.d32 = 0;
+ gintmsk.d32 = 0;
+ gintmsk_common.d32 = 0;
+
+ /* OTG interrupts */
+ gintmsk_common.b.sessreqintr = 1;
+ gintmsk_common.b.conidstschng = 1;
+ gintmsk_common.b.otgintr = 1;
+
+ gintsts.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTSTS);
+ gintmsk.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTMSK);
+ return ((gintsts.d32 & gintmsk.d32 ) & gintmsk_common.d32);
+}
+
+
+/**
+ * @brief USB_OTG_HandleOTG_ISR
+ * handles the OTG Interrupts
+ * @param None
+ * @retval : status
+ */
+static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev)
+{
+ USB_OTG_GOTGINT_TypeDef gotgint;
+ USB_OTG_GOTGCTL_TypeDef gotgctl;
+
+
+ gotgint.d32 = 0;
+ gotgctl.d32 = 0;
+
+ gotgint.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGINT);
+ gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
+
+ if (gotgint.b.sesenddet)
+ {
+ gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
+
+
+ if (USB_OTG_IsDeviceMode(pdev))
+ {
+
+ }
+ else if (USB_OTG_IsHostMode(pdev))
+ {
+
+ }
+ }
+
+ /* ----> SRP SUCCESS or FAILURE INTERRUPT <---- */
+ if (gotgint.b.sesreqsucstschng)
+ {
+ gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
+ if (gotgctl.b.sesreqscs) /* Session request success */
+ {
+ if (USB_OTG_IsDeviceMode(pdev))
+ {
+
+ }
+ /* Clear Session Request */
+ gotgctl.d32 = 0;
+ gotgctl.b.sesreq = 1;
+ USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GOTGCTL, gotgctl.d32, 0);
+ }
+ else /* Session request failure */
+ {
+ if (USB_OTG_IsDeviceMode(pdev))
+ {
+
+ }
+ }
+ }
+ /* ----> HNP SUCCESS or FAILURE INTERRUPT <---- */
+ if (gotgint.b.hstnegsucstschng)
+ {
+ gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
+
+ if (gotgctl.b.hstnegscs) /* Host negotiation success */
+ {
+ if (USB_OTG_IsHostMode(pdev)) /* The core AUTOMATICALLY sets the Host mode */
+ {
+
+ }
+ }
+ else /* Host negotiation failure */
+ {
+
+ }
+ gotgint.b.hstnegsucstschng = 1; /* Ack "Host Negotiation Success Status Change" interrupt. */
+ }
+ /* ----> HOST NEGOTIATION DETECTED INTERRUPT <---- */
+ if (gotgint.b.hstnegdet)
+ {
+ if (USB_OTG_IsDeviceMode(pdev)) /* The core AUTOMATICALLY sets the Host mode */
+ {
+
+ }
+ else
+ {
+
+ }
+ }
+ if (gotgint.b.adevtoutchng)
+ {}
+ if (gotgint.b.debdone)
+ {
+ USB_OTG_ResetPort(pdev);
+ }
+ /* Clear OTG INT */
+ USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGINT, gotgint.d32);
+ return 1;
+}
+
+
+/**
+ * @brief USB_OTG_HandleConnectorIDStatusChange_ISR
+ * handles the Connector ID Status Change Interrupt
+ * @param None
+ * @retval : status
+ */
+static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev)
+{
+ USB_OTG_GINTMSK_TypeDef gintmsk;
+ USB_OTG_GOTGCTL_TypeDef gotgctl;
+ USB_OTG_GINTSTS_TypeDef gintsts;
+
+ gintsts.d32 = 0 ;
+ gintmsk.d32 = 0 ;
+ gotgctl.d32 = 0 ;
+ gintmsk.b.sofintr = 1;
+
+ USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GINTMSK, gintmsk.d32, 0);
+ gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
+
+ /* B-Device connector (Device Mode) */
+ if (gotgctl.b.conidsts)
+ {
+ USB_OTG_DisableGlobalInt(pdev);
+ USB_OTG_CoreInitDev(pdev);
+ USB_OTG_EnableGlobalInt(pdev);
+ pdev->otg.OTG_State = B_PERIPHERAL;
+ }
+ else
+ {
+ USB_OTG_DisableGlobalInt(pdev);
+ USB_OTG_CoreInitHost(pdev);
+ USB_OTG_EnableGlobalInt(pdev);
+ pdev->otg.OTG_State = A_HOST;
+ }
+ /* Set flag and clear interrupt */
+ gintsts.b.conidstschng = 1;
+ USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
+ return 1;
+}
+
+
+/**
+ * @brief USB_OTG_HandleSessionRequest_ISR
+ * Initiating the Session Request Protocol
+ * @param None
+ * @retval : status
+ */
+static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev)
+{
+ USB_OTG_GINTSTS_TypeDef gintsts;
+ USB_OTG_GOTGCTL_TypeDef gotgctl;
+
+
+ gotgctl.d32 = 0;
+ gintsts.d32 = 0;
+
+ gotgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
+ if (USB_OTG_IsDeviceMode(pdev) && (gotgctl.b.bsesvld))
+ {
+ }
+ else if (gotgctl.b.asesvld)
+ {
+
+ }
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.sessreqintr = 1;
+ USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
+ return 1;
+}
+
+
+/**
+ * @brief USB_OTG_InitiateSRP
+ * Initiate an srp session
+ * @param None
+ * @retval : None
+ */
+void USB_OTG_InitiateSRP(USB_OTG_CORE_HANDLE *pdev)
+{
+ USB_OTG_GOTGCTL_TypeDef otgctl;
+
+ otgctl.d32 = 0;
+
+ otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
+ if (otgctl.b.sesreq)
+ {
+ return; /* SRP in progress */
+ }
+ otgctl.b.sesreq = 1;
+ USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
+}
+
+
+/**
+ * @brief USB_OTG_InitiateHNP
+ * Initiate HNP
+ * @param None
+ * @retval : None
+ */
+void USB_OTG_InitiateHNP(USB_OTG_CORE_HANDLE *pdev , uint8_t state, uint8_t mode)
+{
+ USB_OTG_GOTGCTL_TypeDef otgctl;
+ USB_OTG_HPRT0_TypeDef hprt0;
+
+ otgctl.d32 = 0;
+ hprt0.d32 = 0;
+
+ otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
+ if (mode)
+ { /* Device mode */
+ if (state)
+ {
+
+ otgctl.b.devhnpen = 1; /* B-Dev has been enabled to perform HNP */
+ otgctl.b.hnpreq = 1; /* Initiate an HNP req. to the connected USB host*/
+ USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
+ }
+ }
+ else
+ { /* Host mode */
+ if (state)
+ {
+ otgctl.b.hstsethnpen = 1; /* A-Dev has enabled B-device for HNP */
+ USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
+ /* Suspend the bus so that B-dev will disconnect indicating the initial condition for HNP to DWC_Core */
+ hprt0.d32 = USB_OTG_ReadHPRT0(pdev);
+ hprt0.b.prtsusp = 1; /* The core clear this bit when disconnect interrupt generated (GINTSTS.DisconnInt = '1') */
+ USB_OTG_WRITE_REG32(pdev->regs.HPRT0, hprt0.d32);
+ }
+ }
+}
+
+
+/**
+ * @brief USB_OTG_GetCurrentState
+ * Return current OTG State
+ * @param None
+ * @retval : None
+ */
+uint32_t USB_OTG_GetCurrentState (USB_OTG_CORE_HANDLE *pdev)
+{
+ return pdev->otg.OTG_State;
+}
+
+
+/**
+* @}
+*/
+
+/**
+* @}
+*/
+
+/**
+* @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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